Basler Electric BE1-50/51B-232 - Manual (Page 15)

both SW3-1 and SW3-2 provides an additional delay of 0.3 second. Section 2 illustrates the location of
SW3.
The instantaneous element in BE1-50/51B-232 relays may be set lower than the instantaneous element
in ABB relays and still have the same reach. This is because the BE1-50/51B-232 instantaneous element
effectively eliminates the fault current transient overreach components. When calculating BE1-50/51B-
232 relay instantaneous element settings, calculate the symmetrical value without any adder for transient
overreach.
P0048-10
Figure 1-2. Instantaneous Characteristic Curves
Burden
Burden is non-linear. Figure 1-3 illustrates the device burden.
At 0.5 amperes: 4.8

At 5.0 amperes: 0.2

9252000896 Rev B BE1-50/51B-232 General Information 1-5